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Tick tick tick when cold

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YOUR RESEARCHTick tick tick when cold

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POST 1 / ORIGINAL POSTEROriginal post

Ho hum, this 1999 996 of mine just did this today. Started the car, heard a very crisp "tick"-ing sound from the engine compartment. Came from the right bank. Popped lid, played with the throttle, got down on all 4's (well, 3's because one hand was on the throttle), noticed it coming from one of the cylinders. Sounded like someone had unplugged one of the spark plugs and was letting it spark in the air. Either that or it sounded like a very crisp valve noise. No miss fire, no rough idling. Interestingly, after the engine got hot (185-190), the noise went away. Was this a sticky valve? 18,000 miles, never downshifted accidentally from 5th to second while going at 120 mph at DE, so I guess a twisted valve is not it.

POST 2Original post

Sound more like a sticking hydraulic lifter but I can't be sure. If it persists, take the car in.

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